I learned from this thread, effective resistance of an inductive load

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abstruse1

Joined Jan 18, 2021
6
...that the effective resistance of an inductive load running on AC isn't the same as its measured resistance with a DVM.

Is this true with DC also?
 

wayneh

Joined Sep 9, 2010
17,152
...that the effective resistance of an inductive load running on AC isn't the same as its measured resistance with a DVM.

Is this true with DC also?
No. There’s no frequency-dependent component to pure DC. Note though that pulsing DC is not the same and would exhibit the impedance effect.
 

crutschow

Joined Mar 14, 2008
27,172
The resistance component of a inductive load at line frequency is essentially the same as that measured by an ohmmeter, but the inductance adds a reactive impedance that is proportional to frequency.
 
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